Repair Manual. Citaq Android POS презентация

and lift the screen to open the cover

2

1

out screws marked
2、Turn the switch to a balance position
3、 Take out the plastic base from bottom to upwards

1

2

3

all screws marked in pic
2、Lift the metel piece and you will see the connect cable of the mainboard with printer board.

1

2

the breaches pic showed by a small – type screwdriver
2、Lift the cover
3、Unscrew the screws pic marked and take out the metal piece covered with the cables. The 3G module is movable at the same time

1

2

3

Cable for 3G module

3G

cover

1、Unscrew the marked screws and push the cover upwards
2、Will see the printer board after opening cover

1

2

board

Switch Cable

Sensor

Printer Head

USB Connect cable

Screen signal cable

Printer mechanism cable

1、Pull out all cables on board and remove screws to take out the printer board.

frame

1、Unscrew the marked screws and open the cover

2、Disassemble the frame from metal host then pull out the sensor cable from the hole.

Sensor cable

the marked screws to take sensor apart.

）Sensor signal receiver( it should be black)

Sensor transmitter(it should be transparent)

mechanism

1、Cut the marked plastic wire

2、Unscrew the marked screws then slowly pull out the connect cable

Connect cable

打印头塑料翻盖提手

3、Pull out connect cable

4、Unscrew the marked screws and push downwards to take out printer cover lifter

mechanism

1、Take out the connector from cable slot, then remove the screws to take out printer mechanism and ground cable

cable slot and printer mechanism connector

Ground Cable

Plastic base for printer mechanism

the marked screws to take out this cover

WIFI Antenna

3G Antenna

3G Antenna cable

WIFI Antenna cable

Touch screen cable

LCD Cable

Speaker cable

Indicator board

3G port

Speaker cable

Indicator connect cable

Battery Cable

Speaker

Battery

out WIFI cable

2、Push out the marked buckle and push out touch screen cable

3、Push out the marked buckle and push out LCD cable

4、Pull out Speaker cable

5、Pull out battery cable

6、Pull out indicator cable

7、Pull out speaker cable

8、Remove marked screws to take out the main board

1

2

3

4

5

6

7

8

Wifi antenna and 3G antenna

1、Tear the wifi circuit and ground sticker

屏幕上端

1

2

3

4

5

2、Draw out 3G antenna circuit

4 and 5、Unscrew marked screws to disassemble speaker

屏幕下端

6

3、Slowly pull the edge of battery to take it out

6、Unscrew 3 marked screws to take out indicator board

of screen

1、Remove marked screws to disassemble the metal fixture

Pls protect the cable between touch screen and LCD when disassembling

to pull up the edge of LCD as pic marked. Then subsequently pull up the buckles from 1,2,3 point to disassemble LCD panel

Pls protect the cable between touch screen and LCD when disassembling

1

2

3

heat up the edges which marked in pic 1 by a thermal blower.. Stop until it turns a little hot

Pls protect the cable between touch screen and LCD when disassembling

2、Gently push the touch screen towards the side without cables

3、Carefully pull out the cable from the hole after separating the touch screen and frame

1

2

3

replace LCD panel and see if the device starts. If it were still black screen then pls replace main board

2、Eliminate the problem of printing blank：
Check if the mechanism connector looses or printer board connector looses. If problem still exists then replace printer board

3、Eliminate the printing malfunction：
The beeper keeps beeping after loading paper, then the printer board must be replaced

4、Eliminate the problem of no 3G signal：
Make sure if the sim card is with allowance. Change the sim card first. If the problem still exists, try to change 3G module. If it still doesn’t work, then change the mainboard.

5、Unable to connect to internet by LAN：
Restart the device. If problem exists, change the printer board.

6、无法跳电磁阀故障排除：
Check if there is paper inside. If problem exists, then need to change printer board.